[Impulse cytophotometry in neoplasm prevention. The behavior of normal vaginal smears in the impulse cytophotometric histogram].

Evaluation of histograms of normal cervical and vaginal smears, produced by ""rapid flow through'' cytophotometry. Normal cytological cervical and vaginal smears were examined for their appearance in histograms in order to find criteria for the classification of ""normal non-pathological'' cytological slides. Simultaneously, the reliability of the standardized method for preparation of vaginal and cervical smears was checked. The diagrams and data produced by the histograph were also coded on line and analyzed by a computer; thus obtaining an objective mathematical analysis and avoiding errors due to subjective visual analysis of the histograms. The objective interpretation of histograms of normal vaginal smears is an important step to the realisation of automatic pre-screening.